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Finding the Third Proportional to 86,640 and 133,088

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Solution

The third proportional to 86,640 and 133,088 is: 204,436.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,640 : 133,088 = 133,088 : x
  2. Step 2: Convert to fraction form
    86,640/133,088 = 133,088/x
  3. Step 3: Cross multiply
    86,640x = 133,088 × 133,088
  4. Step 4: Simplify right side
    86,640x = 17,712,415,744
  5. Step 5: Solve for x
    x = 17,712,415,744/86,640
  6. Step 6: Final answer
    x = 204,436.93

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.